For optimum accuracy, zero the instrument on the range to be used for measurement.
为了获得最好的准确度，应当在测量工作所使用的量程上对仪器进行调零。
The optimum phase control code for beam pointing increases accuracy of beam pointing obviously.
利用这种控制码，波束指向精度提高了一个数量级。
The method of multi-objective programming used in this paper can be applied to other sort of optimum design for practical survey engineering and their accuracy analysis.
本文提出的理论和方法亦可推广应用于一般测量工程的精度分析和优化设计中。
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